#!/usr/bin/env python3

X = int(input())
for i, v in enumerate([1800, 1600, 1400, 1200, 1000, 800, 600, 400]):
    if X >= v:
        print(i + 1)
        break X = int(input()) X int(input()) int input() input for i, v in enumerate([1800, 1600, 1400, 1200, 1000, 800, 600, 400]):
    if X >= v:
        print(i + 1)
        break i v enumerate([1800, 1600, 1400, 1200, 1000, 800, 600, 400]) enumerate [1800, 1600, 1400, 1200, 1000, 800, 600, 400] 1800 1600 1400 1200 1000 800 600 400 if X >= v:
        print(i + 1)
        break X >= v X v print(i + 1) print i + 1 i 1 break X = int(input()) int(input()) X
#!/usr/bin/env python3

X = int(input())
for i, v in enumerate([1800, 1600, 1400, 1200, 1000, 800, 600, 400]):
    if X >= v:
        print(i + 1)
        break
